Miners and other men sit and drink in Khutsong, a poor mining community outside of Johannesburg. Many people in Khotsung work at the mines and those who do not are often unemployed. Once a miner has contracted TB the disease can lie in wait for more than 10 years until the patients immune system is weakened and the disease becomes active. South African Gold miners are particularly vulnerable to contracting TB because of the small, poorly ventilated work conditions, high rates of TB and high rates of silicosis, a lung disease often found in miners that increases the chance of catching TB.